Results 31 to 40 of about 38,739 (261)

Electrochemical Methods for Obtaining Thin Films of the Refractory Metal Carbides in Molten Salts

International Journal of Electrochemical Science, 2017
Synthesis of Cr7C3, NbC and TaC coatings on the surface of carbon steels and carbon fibers was carried out using currentless transfer. The corrosion resistance of the Cr7C3, NbC and TaC carbides coatings was studied in concentrated HCl, H2SO4 and H3PO4 ...
Yu. V. Stulov, V.S. Dolmatov, A.R. Dubrovskiy, S.A. Kuznetsov   +3 more
doaj   +1 more source

Rare earth elements in coastal sediments of the Northern Galician Shelf: influence of geological features [PDF]

, 2012
Prego, R., Caetano, M., Bernardez, P., Brito, P., Ospina-Alvarez, N., & Vale, C. (2012). Rare earth elements in coastal sediments of the Northern Galician Shelf: influence of geological features. Continental Shelf Research, 35, 75–85.
Caetano, M, Vale, C., Bernárdez, Patricia, Bernardez, P, Ospina-Álvarez, Natalia, Brito, Pedro, Vale, Carlos, Prego, R., Caetano, Miguel, Ospina-Alvarez, N., Brito, P, Prego, R   +11 more
core   +1 more source

EFFECTS OF CONCENTRATED LIGHT FLOWS ON MECHANICAL PROPERTIES AND STRUCTURE OF CERAMIC PENTAOXIDE NIOBIUM [PDF]

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2011
Investigating the effect of concentrated light beams on the structure and mechanical properties of ceramic Nb2O5. Under the influence of high-energy light in Nb2O5 ceramics produced micro-and nanostructure of fractal type and is caused in part "island ...
M.N. Palatnikov, O.B. Shcherbina, V.V. Efremov, N.V. Sidorov   +3 more
doaj  

Influence of the Second Coordination Sphere on the Electrochemical Behavior of Chromium Complexes in Chloride Melts: Experimental and Calculation Methods

International Journal of Electrochemical Science, 2013
The cyclic voltammetry method was used to determine the standard rate constants of charge transfer (ks) on a glassy carbon electrode for the Cr(III)/Cr(II) redox couple in the systems of NaCl–KCl–CrCl3, KCl–CrCl3, and CsCl–CrCl3 in the temperature range ...
Yu.V. Stulov, V.G. Kremenetsky, S.A. Kuznetsov   +2 more
doaj   +1 more source

Bioleaching of Rare Earth Elements: Perspectives from Mineral Characteristics and Microbial Species

, 2023
Bioleaching exhibits high potential for the processing of low-grade complex mineral resources. With the development of the economy and an increase in demand, rare earth elements (REEs) in secondary resources, such as phosphogypsum, red mud and coal ...
Changchun Zhou, Shulan Shi, Bin Dong, Weiguang Zhou, Jinhe Pan   +4 more
core   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

СERAMICS BASED ON COPRECIPITATION OF NIOBIUM AND TANTALUM PENTOXIDE: STRUCTURE AND PROPERTIES [PDF]

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013
Using methods of probe microscopy and impedance spectroscopy, the structure, mechanical and electrophysical properties of ceramics on the basis of coprecipitated pentoxide Nb2(1-y)Ta2yO5 were investigated.
O.B. Shcherbina, V.V. Efremov, M.N. Palatnikov, S.M. Macloboeba   +3 more
doaj  

Mineral Element Insiders and Outliers Play Crucial Roles in Biological Evolution

Life, 2022
The geosphere of primitive Earth was the source of life’s essential building blocks, and the geochemical interactions among chemical elements can inform the origins of biological roles of each element.
Eli K. Moore, Daniella L. Martinez, Naman Srivastava, Shaunna M. Morrison, Stephanie J. Spielman   +4 more
doaj   +1 more source

Associations of Rheumatoid Arthritis Disease Activity With Frailty Over Five Years of Follow‐up

Arthritis Care &Research, EarlyView.
Objective To evaluate whether rheumatoid arthritis (RA) disease activity is associated with frailty both in cross‐section and longitudinally. Methods Participants within the Veterans Affairs Rheumatoid Arthritis (VARA) registry enrolled from 2003 to 2022 were included.
Courtney N. Loecker, Yangyuna Yang, Punyasha Roul, Aaron Baraff, Myra S. Schmaderer, Lani Zimmerman, Kaleb Michaud, Namrata Singh, Grant W. Cannon, Gary Kunkel, Ted R. Mikuls, Ariela R. Orkaby, Joshua F. Baker, Bryant R. England, Katherine D. Wysham   +14 more
wiley   +1 more source

STRUCTURE AND MECHANICAL PROPERTIES OF CERAMIC COPRECIPITATE OF PENTOXIDE Nb2(1-y) Ta2yO5 [PDF]

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2012
In this paper we studied the structure and mechanical properties of ceramics Nb2O5 and ceramics based on coprecipitated pentoxide Nb2(1-y)Ta2yO5, and the effect of treatment with concentrated light flows (CLF) on the structure and properties of these ...
M.N. Palatnikov, O.B. Shcherbina, V.V. Efremov, A.A.Janichev, N.V. Sidorov, V.V. Pasechnyi   +5 more
doaj